chore(package): update eslint to version 6.7.0

Closes #46

Author: greenkeeper[bot]

package.json

@@ -34,7 +34,7 @@
     "babel-loader": "^8.0.0-beta.0",
     "babel-plugin-transform-class-properties": "^6.24.1",
     "copy-webpack-plugin": "^4.6.0",
-    "eslint": "^5.0.1",
+    "eslint": "^6.7.0",
     "eslint-config-airbnb-base": "^13.0.0",
     "eslint-plugin-import": "^2.8.0",
     "msgflo-nodejs": "^0.11.1",